... steel 2,58 screwdrivers in 1 set, fit for cellphone,laptop and desk computer maintainance. 58 in 1 YH-201103 multi-function screwdriver sleeve combination ... from senior chrome vanadium steel, hardened and black processing.4. Chrome vanadium screwdriver head ensure that the size highest ... : 2.0 (demolition handheld computer, mobile phone use)Word: 1,1.3,1.5,2,2.5,3,4 (most commonly used)Cross: ...